That is because Allah, He is the Truth, and that which they invoke besides Him is Al-Batil (falsehood, Satan and all other false deities), and that Allah, He is the Most High, the Most Great.
Dan sesungguhnya tuhan-tuhan yang kalian sembah selain Allah, ketuhanan mereka adalah batil dan palsu. Hanya Allah semata yang Mahatinggi dan Mahabesar kekuasaan-Nya.